Compact Diode-Pumped Solid-State Laser with Intracavity Pump-Enhanced DFG Emitting at ∼3.5 Microns

被引：2

作者：

Flannigan, Liam G. K. ^{[1
]}

Atwi, Ali ^{[1
]}

Kashak, Tyler ^{[1
]}

Poitras, Daniel ^{[2
]}

Xu, Chang-Qing ^{[1
]}

机构：

[1] McMaster Univ, Dept Engn Phys, Hamilton, ON L8S 4L8, Canada

[2] Natl Res Council Canada, Adv Elect & Photon Res Ctr, Ottawa, ON K1A 0R6, Canada

来源：

PHOTONICS | 2023年 / 10卷 / 10期

关键词：

nonlinear optics; difference frequency generation; mid-infrared laser; DPSS laser; linear cavity; FILM LITHIUM-NIOBATE; GENERATION;

D O I：

10.3390/photonics10101164

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a diode-pumped solid-state (DPSS) laser used for intracavity pump-enhanced difference frequency generation (DFG) to create a 3.5-micron laser. Using a 50 mm-long periodically poled lithium niobate (PPLN) crystal inside the cavity of an Nd:YVO4 solid-state laser at 1064 nm with 4.5 W pump power at 808 nm, and a 310 mW C-band signal at 1529 nm, up to 31 mW of mid-infrared output power at 3499 nm is obtained. The cavity requires no active stabilization and/or locking, and the entire cavity is <8 cm in length. The obtained output power corresponds to a black-box efficiency of 2.20%W-1, which is the highest value reported to date for continuous-wave DFG based on a bulk nonlinear optical crystal with no active stabilization. Potential future applications in free-space optical communication are also discussed.

引用

页数：14

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